A battery steel strip and its preparation method

A steel strip and battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low hardness and tensile strength of steel strips with high nickel content, and achieve improved tensile strength and ductility, and good interpenetration , Accelerate the effect of co-deposition

Active Publication Date: 2019-05-31
无锡市力达金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, three different nickel-containing coatings are plated on the above-mentioned nickel-plated steel strip, which significantly increases the nickel content. Because the nickel-plated steel strip is punched into battery steel shells, it will go through multiple processes, and the hardness of the high-nickel-content steel strip with significantly lower tensile strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for preparing a battery steel strip, comprising the steps of:

[0040] (1) Use ultrasonic waves to degrease the surface of the nickel-plated base belt, then wash it with water, and then put it in dilute sulfuric acid to derust and activate it;

[0041] (2) Mix NiO nano powder, nano chromium powder and ethanol according to the molar ratio of 68:32:100, and disperse it with an ultrasonic cleaner to make an alloy coating liquid, inject the alloy coating liquid into the spray gun, and spray it on the nickel-plated substrate After drying at 80°C for 30 minutes, put the nickel-plated base strip into a high-temperature tube furnace, and heat it to 1000°C at a heating rate of 10°C / min in a protective atmosphere;

[0042] (3) Weigh according to the molar ratio n (NaCl): n (KCl): n (NaF): n (nano chromium powder): n (nano niobium powder) = 1: 1: 3: 0.82: 0.18, mix well Then pour it into a high-purity graphite crucible; place the high-purity graphite crucible with electr...

Embodiment 2

[0047] A method for preparing a battery steel strip, comprising the steps of:

[0048] (1) Use ultrasonic waves to degrease the surface of the nickel-plated base belt, then wash it with water, and then put it in dilute sulfuric acid to derust and activate it;

[0049] (2) Mix NiO nano powder, nano chromium powder and ethanol according to the molar ratio of 66:34:100, and disperse it with an ultrasonic cleaner to make an alloy coating liquid, inject the alloy coating liquid into the spray gun, and spray it on the nickel-plated substrate After drying at 80°C for 30 minutes, put the nickel-plated base strip into a high-temperature tube furnace, and heat it to 1000°C at a heating rate of 10°C / min in a protective atmosphere;

[0050] (3) Weigh according to the molar ratio n (NaCl): n (KCl): n (NaF): n (nano-chromium powder): n (nano-niobium powder) = 1:1:3:0.8:0.2, mix well Then pour it into a high-purity graphite crucible; place the high-purity graphite crucible with electrodepos...

Embodiment 3

[0055] A method for preparing a battery steel strip, comprising the steps of:

[0056] (1) Use ultrasonic waves to degrease the surface of the nickel-plated base belt, then wash it with water, and then put it in dilute sulfuric acid to derust and activate it;

[0057] (2) Mix NiO nano powder, nano chromium powder, molybdenum powder, silicon powder and ethanol according to the molar ratio of 64:32:3:1:100, and disperse it with an ultrasonic cleaning machine to make an alloy coating liquid, and coat the alloy The liquid is injected into the spray gun, and sprayed on the surface of the nickel-plated base strip, dried at 80°C for 30 minutes, then put the nickel-plated base strip into a high-temperature tube furnace, and heated to 1000°C at a heating rate of 10°C / min in a protective atmosphere;

[0058] (3) According to the molar ratio n (NaCl): n (KCl): n (NaF): n (nano chromium powder): n (nano niobium powder): n (nano zirconium powder): n (silicon powder) = 1: 1: 3: 0.78: 0.18:...

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Abstract

The invention discloses a battery steel strip and a preparation method thereof. According to the key points of the technical scheme, the battery steel strip comprises a nickel-plated base strip, and a Ni-Cr alloy layer and a Cr-Nb alloy layer are formed on the two side surfaces of the nickel-plated base strip sequentially inside to outside; and a transition copper layer, an acid tin layer and a semi-bright nickel layer are plated on the Cr-Nb alloy layer sequentially. Because the Ni-Cr alloy layer and the Cr-Nb alloy layer both contain metal Cr, according to the like dissolves like theory, the two alloy layers penetrate mutually, and accordingly the tensile strength and ductility of the nickel-plated base strip are improved; and meanwhile, the transition copper layer, the acid tin layer and the semi-bright nickel layer are plated on the Cr-Nb alloy layer, so that the weldability, electrical conductivity and excellent attractiveness of the nickel-plated base strip are improved.

Description

technical field [0001] The invention relates to alloy materials, in particular to a battery steel strip and a preparation method thereof. Background technique [0002] At present, the battery industry is in an unprecedented period of rapid development and expansion, especially new battery materials, battery technology and equipment technology have received extensive attention and in-depth research from battery researchers and the industry. The improvement of battery performance is not only related to the progress of battery materials, but also closely related to the quality of battery components. [0003] Nickel-plated steel strip is an important component of the battery. It is not only the carrier of battery active materials, but also the conductive skeleton of the electrode, which plays the role of concentrating electron conduction and evenly distributing current; nickel-plated steel strip has good electronic conductivity and Corrosion resistance, low price, stable perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/06C25D5/14C25D5/40C23C10/32C23C28/02H01M4/66
CPCC23C10/32C23C28/021C25D5/14C25D5/40C25D7/0614H01M4/662Y02E60/10
Inventor 朱晓东滕大庆罗国忠
Owner 无锡市力达金属制品有限公司
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